Long stay visitor visa for minors

“Can my 13-year-old son travel to France on a long-stay visitor visa (for about a year)?

What valid reasons and documents does the French consulate usually accept for minors — especially regarding guardianship arrangements and proof of funds?

Also, what valid reasons for the stay are normally accepted when they ask why he is going to France?

We are from Africa, and we already have someone in France who is ready to act as his guardian if required.

Has anyone here had similar experience with getting a long-stay visitor visa approved for a minor? Any advice would be appreciated 🙏🏻

Also, if there is maybe an immigration personnel or someone who knows about the visa procedures or handles visas, please share — I prefer to get the correct information directly so I don’t waste time or play around.”